\(I_{ion}(v, w, c,\lambda )\) , \(g(v,w)\)  and \(f(v,w,c)\)  are defined by the cell level model. In this work we are using the human
ventricular cell level model, ten Tusscher model [1]} (TT06). Dynamics of the ionic currents is modeled by the 17 ODEs. The ionic
current flow \(I_{sac}\)  due to the stretch activated channels and \( K_{ATP}\)  current is also taken into account. Thus the total ionic current is given by
\(\nonumber & I_{ion}= I_{Na} + I_{K1} + I_{to}+ I_{Kr}+ I_{Ks}+ I_{CaL}+ I_{NaCa}+ I_{NaK} +\\& \hspace{17.07182pt} I_{pCa}+ I_{pK}+ I_{bCa}+ I_{bNa} + I_{KATP}+ I_{sac},\) 
